The high brake light is generally installed on the upper part of the rear of the vehicle, so that the vehicle driving behind is easy to detect the front of the vehicle brake, to prevent the rear-end accident. Because the average car already has two brake lights installed at the rear end of the car, one left and one right.

So the high brake light is also called the third brake light, high brake light, third brake light. The high brake light is used to warn the vehicle behind, so as to avoid rear-end collision.

Vehicles without high brake lights, especially cars and mini cars with low chassis when braking due to the low position of the rear brake light, usually not enough brightness, the following vehicles, especially the drivers of trucks, buses and buses with high chassis sometimes difficult to see clearly. Therefore, the hidden danger of rear-end collision is relatively large. [1]

A large number of research results show that high brake light can effectively prevent and reduce the occurrence of rear-end collision. Therefore, high brake lights are widely used in many developed countries. For example, in the United States, according to the regulations, all newly sold cars must be equipped with high brake lights since 1986. All light trucks sold since 1994 must also have high brake lights